The answer would be A true.
D. 2H₂O ⇄ H₃O⁺ + OH⁻
H₂O⁺ is known as the hydronium cation and OH⁻ is known as the hydroxide anion.
Answer:
D
Explanation:
There are different types of biogeochemical cycles such as; carbon, nitrogen, sulfur, phosphorus, and etcetera named after the respective elements being recycled. They show how these essential elements pass in different spheres of the earth (lithosphere, atmosphere, and hydrosphere) and are used and recycled by different processes.
Answer:
Option A, by having a constant supply of blood
Explanation:
Blood that flows to the muscles bring oxygen from the atmosphere to the contracting muscles where it gets consumed. During large muscle exercise, two physiological needs arise – a) high and prolonged muscle blood flow and b) regulation of blood pressure so that there is adequate perfusion of pressure to all organs. In order to meet both the requirements, the blood flow increases so that the vasoligating muscles do not outstrip the cardiac output.
Hence, option A is correct
I can teel you its definetly not D im sorry i was not much help
